Pneumatic action for muscial instruments.



R. G. BENSON.

PNEUMATIC ACTION FOR MUSICAL INSWUMEFJTSr APPL'lCATION FILED JuLY2u,1s1o. RENEWED APR. 4. 1917 1,235,759. Patented Aug. 7,1917.

4- SHEETSSHEET I.

Til-Li I G. BENSON.

PNEUMAHC ACTiON FOR MUSICAL HwSTz'Zl APPLICATION FILEDJULYZU,I910. 1,235,759.

Paien'md Aug. 7, 191?.

4 SHEET SHEET 3.

w fl w. .w E a g R. G. BENSON. PNEUY AUC ACTION FOR MUSICAL INSTRUMENTS. APPLICATION FILED JULY 20, 1910. RENEWED A PR. 4, I917- Paien'red Aug. 7, 1917.

4 SHEETS--SHEET 4.

E. BEHSDN, OF CHICAGC ILLINOIS,

ASSIG-EIOEL TO THE COMPAETT, D

CHICAGO, ILLIZIGLS, A CORPORATION OE ZLLZNOIS.

FNEUEEATIC ACTION F611 MUSICAL INSTEUT-IENTS.

This invention relates to musical instru ments which may be mechanically actuated and automatically or otherwise controlled in actuation and it especially concerns the construction, arrangement and connection of an action to be used therefor, the principal objects being; to provide a compactly arranged structure wherein the parts are so disposed and'detachably secured in position as to facilitate access thereto and detachment or removal thereof and to embody the more delicate parts in detachable units to facilitate exchange or transposition thereof.

Figure 1 is a front view of the upper portion of a pneumatically-actuated piano, parts of the case being broken away to disclose the arrangement above the key-bed of a pneumatic action constructed in accordance with my invention.

Fig.- 2 is an enlarged vertical sectional View, upon theline 22 of Fig. l. of the pneumatic action, the usual piano notesounding action and associated parts.

Fig. 3 is a fragmentary front view of my improved pneumatic action, illustrating tie method preferably employed in detachably securing and clamping the principal divisions in position.

Fig. t is a vertical sectional view, upon the line 4 st of Fig. 3. of a hollow supportor header, illustrating the method preferably employed in detachably securingthe principal divisions in position thereupon and of detachably securing the support in posi tion to permit pneumatic communication of each division with a wind-inducing-apparatus.

Fig. 5 is a sectional View, upon the line 5 5 of Fig. 3, of a tie or clamp which I employ in connection with the principal divisions in obtaining rigidity.

Fig. 6 is an enlarged plan of an individual power pneumatic and the controlling valve-action associated therewith, showing the separate constituent units in correct position. v

Fig. 7 is a vertica the line 7? o Figs. 8 and 9 be hereinafter descri xu 10 is a detail view of a portion of the action mechanism.

i i, and C indicate removable parts of the piano case. D indicates the key-bed, E, the keys, F, the strings, G, the hammers and H, the piano action-supymrting frame. All of these parts are well known and are not included in my invention.

I prefer to place the pneumatic action above keys E and immediately in front of the piano-action-stickers 1 (Fig; 2) and to support and connect it in a manner that will not interfere ith manual playing of the instrument.

The usual means may be employed for autou'iatically controlling the operation of the pneumatic action, comprising a traveling perforated music-sheet 2 and a tracker-board 3 across which the music-sheet is propelledin any desired manner to accomplish alternate opening and closing of selected trackerapertures which constitute inlets for the well-known tracker-tubes t.

Stickers 1 may be arranged in the usual or any desired manner .for reciprocal movement through manipulation of keys E to cause operation of hammers (l. Levers 5 are pivoted at their rear ends to flanges 6 which are secured to a bar 7 firmly held in place upon the frame H of the piano act-ion. Each lever extends through a slot in the upper end of one of the stickers 1 beneath a pin 8. lhe slots are longv enough to permit full upward movement of stickers 1 by manipulation of keys E without disturbance of levers 5 and upward movement of the forward end of said levers may cause movement of stickers 1 without disturbance of keys E by upwardly iearing' upon the under si les of pins 8. Upward movement of the forward end of levers 5 may be adjustably limited by a stop-rail 9 preferably secured to the frame H and; having" separate adjusting means for the in dividual' levers. inoperative position of levers 5 is determined by an adjustment which will be hereinafter described.

I prefer to placethe wind-inducing apparatus, which may be of any preferred construction, below key-bed D and adjacent to [pianostrings F. I have indicated by l0 10 (Figs. 1 and 2) portions of an apparatus of this character communicating through conduits 11 11 with passages 12 12 which are cut through the key-bed near either end .of the instrument. (Fig. 1.)

Opposite ends of the pneumatic action are similarly supported and secured and a description of the construction at one end thereof will suffice. Post 13 is hollow and is secured in air-tight connection with passage 12 by means of bolt 14, anchor-block 15 and plate 16. Block 15 is firmly secured upon the upper side of the key-bed and is apertured to provide pneumatic communl- 15 cation between passage 12 and post 13.

Plate 16 is secured within the aperture in the block and is so positioned, perforated, or otherwise arranged as not to interfere with free Wind passage. Bolt 14 is passed encl- 20 wise through-the post into threaded engagement with plate 16. Post 13 may thus be placed upon block 15 and clamped in po-,

sition and air-tight connection through a tightening of the bolt or the bolt may be unscrewed from the plate and the post removed together with any attachments thereto.

Hollow rectangular bars 17 17 extend completely across the piano over the keys and are individually secured near each end upon hen the individual primary casings are secured in position each aperture 27 therein registers with one of a number of apertures 29 in the front faces of bars 17 and when the individual secondary casings are secured 70 in position each aperture 28 therein registers with one of a number of apertures 30 in the rear faces of said bars.

Each primary casing 25 is provided at its opposite inner edges with annular recesses 75 L and 32 and comprises two concentric chambers 33 and 34 which are separated by a partition 35 centrally apertured at 36. Chamber 33 is inclosed by outer wall 37 which is in the form of a plate fitted tightly 80 within annular recess 31 and centrally apertured at 38. Chamber 33 is also provided with an aperture 39 which is fitted with a tube 40. Aperture 27 opens into chamber 34.

. the front side of a post 13 by means ofplates 18 18 and screws 19 19. The contacting sides of the bars and posts are respectively provided with registering aper- 35 tures 20 and 21, so that the interior of each bar 17, when secured in position, becomes an individual wind-chamber or passage in which the pneumatic pressure maybe varied by the wind-inducing apparatus 10 through posts 40 13 13, passages 12 12 and'conduits 11 11."

I obtain a rigid frame-work byproviding the front sides of the posts with transverse channels or recesses 17*, each for the reception of the intersecting portion of the rear side of a bar, and provide against twisting of the bars by means ofclamps or ties which may be arranged at convenient locations between the posts. (Figs. 1, 3 and 5.) I have shown a clamp consisting of two plates 22 and 23. which may extend across and be drawn firmly down upon the opposite sides of the several bars by means of screws 24.

One plate may be grooved or recessed upon its inner side to embrace that portion .of the sides of the several bars across which it extends and thus prevent displacement of the clamp through vibration.

.Individual primary casings 25 and individual secondary casings 26 are arranged respectively at the front and rear of bars 17 and are screwed or otherwise removably sccured thereupon. (Figs. 2, 3, 6 and 7.) Each primary casing 25 is provided with an aperture 27 and each secondary casing 26 is (Fig. 7.)

Each primary valve comprises a stem 41, 35 an inner disk 42 and an outer disk 43. The valve-stem is passed through apertures 36 and 38 and the valve-disks are supported by the stem near the opposite outer sur- I faces of partition 35 and Wall 37 and provided upon their adjacent faces with leather or other suitable packing material. Apertures 36 and 38 are of greater diameter than the valve-stem so that, in addition to guiding the valve, they may serve as ports to be 9.5 alternately covered by valve-disks 42 and 43. Reciprocal. movement of the primary valve will cause alternatecommunication of chamber 33 and tube 40 with the atmosphere through aperture 38 and with chamber 34 through aperture 36.

Each secondary casing 26 is provided at its opposite inner edges with annular recesses .44 and 45 and comprises two concentric chambers 46 and 47 which are separated by a partition 48 provided with a central port49. The edge of the casing is internally threaded about recess 44 and chamber 46 is inclosed by outer wall 50 which is in the form of a plate having a central port 52. The plate is threaded about its outer edge and screwed within recess 44 upon packingring 51. Chamber 46 is provided with an aperture 70. Aperture 28 opens into chamber 47. Each secondary valve comprises a stem 53 which carries an adjustable head 54 and a flexibly attached disk 55 The stem extends through ports 49 and b2 and is 1 guided at its outer end by a guide 56 which is riveted or otherwise secured upon the out- .120 side of wall 50. Stem 53 is threaded at its inner end to provide adjustment for the head 54. For alternately closing ports 49 and 52, I prefer to employ the opposite surfaces of the single valve-disk 55, which I provide with leather or other suitable packing material. I. I

T he edge of primary casing 25 is internally threaded about recess and chamber 34 is closed by a flexible diaphragm 57. The

edge of secondary iasing 26 is internally threaded about recess 45 and chamber all" is also closed by a diaphragm 5T. Diaphragms 57 for all of the casings are alike in construction and similarly held in position. Each i composed of a circular piece of reasonably impervious membrane, such as thin leather or rubber-coated silk, and is preferably secured to a packinga'ing 5S and pro- "vided upon one surface, at or about its central part, with a disk of cardboard or other stiff material 58*. (Fig. 8.) Each diaphragm-and-ring combination is of such diameter that it may nicely fit 'ithin one of the recesses or l5 and be clamped against the-shoulder the cot to seal the re' spective chamber 3i or $7 and position its 'cardboard disk close to, and directly in surfaces of the lugs alinem'ent with, the respective valve-stem ll or 53. Each cup is shaped to permit tubular connection therewith and to fit within one of the recesses 32 or 45 against packing-ring 58 and each screw-ring 59 is threaded about its outer edge so that it may be screwed within one of these-recesses against the border of a cup 60 and thereby clamp cup, packing-ring and diaphragm firmly within the recess and against the shoulder thereof. lVith the justcleseribed parts in position, a chamber is formed between each diaphragm and cup. Secondary diaphragmchamber 61 communicates through tube 40 with primary valve-chamber 33 and primary diaphragnrchamber 62 communicates through tube 63 and one of a series of passages 6G in; the wall of a vent-chamber 6i (Fig. 4'} \Yltzl one of the tracker-tubes l. Vent-chaml er 4 communicates through tube 65 with one or both of the hollow posts 13 and is in this manner provided with the same variations in pneumatic pressure as are other parts of the action. Each passage 66 communicates with chamber Cl through a pinhole or vent 67.

(han'iber 46 of each secondary casing 26 is connected with a power pneumatic 68 through apertures '70 and T1 bymeans 0t passage-way 69. Movable side 72 of each pneumatic is provided with :1 lug 73 and the lugs of the two lower rows or tiers of pneumatics are fitted with pivotally-attached upwardly-turned pitman-rods 73 which pass through a guide Tl-preterably secured to and removable with the pneumatic action. (Fig. 2.) Pitman-rods 73 are provided with buttons or heads 73 at their upper ends and the upper surfaces of these heads are ar- "ranged to project to a level with the. upper of the upper row or tier of pneumatics. When th action is in correct position, the forward end of each of the levers 5 projects over and slightly above a corresponding pitman-head 73 or pneumatic-lug 73 and ach lever carries an adiusting device 75 arranged to .contact with are sealed by an imperforate part the particular head or lug over which the lever is positioned.

Tln's pneumatic action is arranged to be cperated by suction or air-pressure less than atmospheric pressure but slight modifications may be made by those skilled in the art, without departing from the spirit or scope of my invention, by which the action may be arranged for operation by air -pressure greater than atmospheric pressure.

7 Ope 'ation of the wind-inducing apparatus 10 will reduce the air-pressure in all of the chambers 3iand st? through apertures 27, 29, 28 and 30, hollow bars 17, apertures 20 and 21, hollow posts 13,-passagcs 12 and conduits ll. i-i irpressure is likewise reduce in the vcm:-chambcr til through tube 65 when all of the apertures in the ill music-sheet 2, the same reduction Li air pressure will take place in each of the trackertubes 4, tubes 63 and primary diaphragnr chambers (L, by means of the individual vents 67 in chamber 64:. Under such conditions, the diaphragm 57 of each primary casing 25 will rest between two approximately equal degrees of reduced air pressure; atmos pheric pressure will cause the respective primary valves to retain their innermost position, holding the outer disk 48 of each valve closed over the respective aperture 38, and the air-pressure within each secondary diaphragm-chamber 61, tube l0 and primary valve-chamber 33 will be reduced to a similar degree throuqh uncovered-aperture 36; the diaphragm 54 of each secondary casing 26 will therefore rest between two approxiinately equal degrees of reduced air-pressure and atmospheric pressure will cause the respective secondary l'yalve to retain its innermost position, holding the port 49 closed between'chambcrs and l? and holding port 52 open to admit atmospheric pressure to power pneumatic 68 through apertures 70 and 71 and passage-way When a trackci apcrture is uncovered by a pert'oration in the music-sheet, atmospheric pressure will be admitted to the corresponding tracker-tube passage 66, tube 63 and primary diaphra m-chamber 3;, the respective vent 67 beingtoo small to withdraw the air as fast as it is admitted through the open tracker-aperturc. The equilibrium of primary-diaphragm 57 is instantly dcstrovcd by this change of air-pressure in chamber 62 vand it forced inwardly to move the primary valve outwardl r, thereby interrupting communication between chambers 33 and 3i and establishing connnunication between I 1 9 I! 1 L,, 1 r1} cnam 1m 3:) ant tne .itinosp itie. i to consequent admission of atmospheric pressure through aperture to chamber 33, tube 40 and secondary diaphragmchamber 61 destroys the equilibrium of secondary=diaphragm 5'4 and it is also forced inwardly to "having an end and a side and an aperture move the secondary valve outwardly, thereby interrupting communication of power pneumatic 68, passage 69 and chamber 46 with the atmosphere and establishing communication of these parts with chamber 47. A normal restoration of all the parts is oc casioned by re-sealing the respective trackeraperture by an imperforate portion of the music-sheet 5. The collapse and recovery of the power pneumatic are thus alternately accomplished through the opening and closing of the controlling tracker-aperture.

I claim and desire to secure byLetters Patent:

1. In a pneumatic action for a musical instrument, a pneumatic action frame comprising a first hollow member provided with a groove, a second hollow member having an end and a side and supporting said devices, the interiors of the first and second members communicating with each other, and means adjustable externally of the second member for detachably securing a portion of the side thereof within the groove in the first member of said frame.

2. In a pneumatic action for a musical instrument, a pneumatic action frame, a hollow post provided with a groove, a hollow bar having an end and a side for supporting action devices, the interiors of said post and said bar communicating with each other, and means adjustable externally of said bar for detachably securing a portion of the side thereof within-the groove in said post.

8. In a pneumatic action for a musical instrument, a pneumatic action frame comprising a first hollow member provided with a groove and an aperture, the aperture being located in the wall of the member at the bottom of the groove, a second hollow member in the side for supporting pneumatic action devices, and means adjustable externally of the second member for detachably securing a portion of the side thereof within the V groove in the first member of said frame to permit registration of the aperture in the side of the second member with the aperture in the wall of the first member of said. frame.

.4. In a pneumatic action for a musical I instrument, a pneumatic action frame com prising a hollow post provided with a groove and an aperture, the aperture. being located in the wall of said post at the bottom of the groove, a hollow bar having an end and a side and an aperture in the side and supporting pneumatic action devices, and means adjustable externally of said bar for detachably securing a portion of the side thereof within the groove in said post to permit registration of the aperture in the side of said bar with the aperture in the wall of said post.

5. In a pneumatic action for a musical 1nstrunient, the combination wlth a hollow post, a hollow bar for supporting individual action devices, of means detachably securing said bar to said post with the interiors of said bar and said post in communication with each other and means'detachably securing said action devices individually upon and entirely without said bar with the interiors of said devices and said bar in communication with each other.

6. In a. pneumatic action for a musical instrument, an air-chamber provided with apertures in the oppositesidesthereof, individual valve-casings located on opposite sides of said air-chamber and provided with apertures in the walls thereof which register with the apertures in the sides of said airchamber, a conduit connected with one of said valve-casings and a second conduit connecting two of said valve-casings.

7. In a pneumatic action for a musical instrument, a frame, a tubular air-chamber associated with said frame, individual valvecasings separately and deta-chably secured upon opposite sides of said air-chamber, the interiors of said air-chamber and saidvalvecasings communicating with each other, {a conduit connected with one of said valvecasings and a second conduit connecting two. of said valve-casings.

8. In a pneumatic action for a musical instrument, an air-chamber provided with apertures in the opposite sides thereof, individual casings located on opposite sides of said air-chamber and provided with apertures in the walls thereof which register with the apertures in the sides of said airchamber, a. valve and a valve-operating device embodied in each of said casings, and a conduit connecting two of said casings.

9. Ina pneumatic action for a musicalinstrument, an air-chamber, individual casirigs located 011 opposite sides of said airchamber, the interiors of said air-chamber and said casings communicating with each other, valves in said casings, and a conduit extending from one only of said casings on one side of said air-chamber to one only of said casings on the opposite thereof, where.- by the valve in the casing on one side of said air-chamber may be actuated through actuation of the valve in the conduit-connected easing on the opposite side thereof.

10. In a pneumatic action for a musical instrument, a frame, a tubular air-chamber comprised in said frame, individual primary and secondary valve-casings separately supported on opposite sides of said airchamher, the interiors of said air-chamber and said valve-casings communicating'with each other, and a conduit connecting said valveremovable casing supported as a unit Wholly an individuallyoutside of and upon said air-chamber, the interiors of said air-chamber and said casing communicating with each other, a valve and a valve-operating pneumatic Within said casing, and a power-pneumatic located outside of said air-chamber, within said frame and communicating with said casing; said casing, valve and valve-operating pneumatic being associated with said power-pneumatic to effect control thereof in operation but otherwise separate therefrom as a complete unit.

12-. In a pneumatic action :tor a 1I1US1CD.l

instrument, a frame, a tubular air-chamber comprised in said frame, an individual casing supported as a unit Wholly outside of and upon said air-chamber, the interiors of said air-chamber and said casing communicating with each other, a valve and a valveoperating pneumatic within said casing, and a power pneumatic removably positioned withir said frame beneath said airchamber and said casing; said power-pneumatic being detachably secured in communication with said casing and thus associated with said valve and said valve-operating pneumatic for control. thereby in operation but otherwise separate therefrom as an individual unit.

13. In a pneumatioaction for a musical instrument, an air-chamber provided with an aperture in the wall thereof, an individually-removable casing provided with an aperture in the wall thereof and an annular recess a wall provided with a valve-port, a valve, a valve-operating device, and means for removably securing said casing in position upon said air-chamber and the aperture in the wall of said casing in air-tight registration with the aperture in the wall of said air-chamber to permit detachment and removal of said casing with the parts therein contained without disturbance of other parts; said Wall, valve and valve-operating device being contained within said casing and said valve-operating device being releasably clamped in the recess in said casing.

14. In a pneumatic action for a musical instrument, an individual casing, a single bodypart comprised in said casing, an apertured partition in said body-part formin; two concentric chambers therein, said body-part being provided with an aperture in the Wall thereof opening into each oi the chambers thus formed and with an annular recess about its edge, an outer wall fitted within the recess in said body-part, a valve and a valve-operating pneumatic in said body-part; said valve acting to close the aperture in said pr ,ition.

'15. in a pneumatic action in a musical instrument. an individual casing. a single bod oaa-t, comprised in said casing, an aperturec pal't'ition in said body-part tin-mine two concentric chambers therein, said bod vpart being provided ith aperture in the wall thereof opening into each of the chambers thus formed and with an annular screw threaded recess about its edge, an outer screw-threaded wall screwed into the recess in said body-part, a valve and a valve-operating pneumatic in said bodwpart; said valve acting to close the aperturein said partition.

16. In a pneumatic action for a musical instrument, an individual casing, a single screw-tlireaded body-part comprised in said casing, a valve in said body-part, a valveoperating pneumatic, an outer removable wall, an externally screw-threaded ring screwed into said body-part and holding said wall and said pneumatic in position in said body-part, said wall and said pneumatic forming a chamber in said l'loi ly-part when held in position therein by said ring, and a conduit comn'iunicating with the chamber thus formed.

17. In a pneumatic action for a musical instrument, an individual valve-casing, a single body-part comprised in said valvecasing, an outer wall secured. in said bodypart and provided with a valve-port, a l'lexible diaphragm releasably clamped in said body-part, and an apertured partition in said body-part between said wall and said diaphragm; said partition and said diaphragm forming a middle and two outer chambers within said body-part and said valve-casing havingports opening into each of the chambers so formed.

18. In a pneumatic action "for a musical instrument, an individual casing. a single body-part comprised in said casing. a valve in said bod v-part, two outer removable walls and a flexible diaphragm secured in said body-part, and an apcrturcd partition in said body-part between one of said walls and said diaphragm: said partition and said diaphragm l eu-mini a .n'iiddle and two outer chambers within said body-part, said casing having ports opening into eachoi the chambers so formed, and said diaphragm acting upon said valve to control chamber-coin munication through the aperture in said partition.

1!). In a pneumatic action for a musical instrument. a hollow bar and action valvc devices mounted upon said bar; the interior of said bar bcin; unobsl ructed by projecting" or connecting parts associated with said devices.

20. The combination oi a wind chamber, a valve casing located at one side of said wind chamber, and means for holding said valve casing, in position, said means comprising securing devices extending over and under the wind chamber.

2i. The combination ot a wind chamber, a valve casing located at one side of said wind chamber, and means for securing both top and bottom of said valve casing to said wind chamber.

22. The combination of a wind chamber, valve casings on opposite sides of said wind chamber, and means for holding said valve casings in position, said means extending between said valve casings above said wind chamber.

23. The combination with a wind cham- 4 her, of valve casings on opposite sides of said wind chamber, and meansfor holding said valve casings in position, said means extending between said valve casings below said wind chamber. i 5

24. The combination with a wind chamber, of valve casings on opposite sides of said wind chamber, and means for holding said valve casings in position, said means extending between said valve casings above and below said wind chamber.

25. The combination of a wind chamber, a valve casing located at one side of said ind chamber, and screws for holding said. .valve' casing in position, said screws engaging the topand bottom of the valve casing above and below the wind chamber.

26. The combination of a wind chamber,

valve casings located on opposite sides or said wind chamber and screws for holding said valve casings in position, said screws engaging the tops and bottoms of the valve casings above andbelow the wind chamber, said valve casings being provided with upwardly and downwardly projecting lugs,

through which said screws pass and the top and bottom of said wind chamber being provided with longitudinally extending strips being in turn supported by said valve casing.

29. The combination of a wind chamber, a valve easing at one side of said wind chamber, a power pneumatic below said valve casing, and means for supporting said power pneumatic, said means comprising a tubular member attached to said valve casing and forming a windway between the same and said pneumatic, said tubular member extend ing downwardly alongside of the valve casing and being secured at its lower end to said pneumatc.

30. The combination with a wind chamber. of valve casings located on opposite sides of between the latter-and said power pneumatic.

said wind chamber, a power pneumatic lo cated below the wind chamber andsaid valve casings, and tubular connections extending between the valve casings and located 7 .0 31. The combination of a wind chamber, a valve casing on one side thereof, a power pneumatic located below said valve casing, a tubular connection extending downwardly at one side of said valve casing and serving as a windway between said valve casing and said pneumatic and also as a support for the latter, and means for securing said tubular connection detachably to said valve casing.

32. The combination of a wind chamber, a valve casing on one side thereof, a power pneumatic located below said valve casing, a tubular connection extending downwardly at one side of said valve casing and serving as a windway between said valve casing and said pneumatic and also as a support for the latter, and means for connecting said tubular connection detachably to the valve casing and also to the pneumatic.

33. The combination of a wind chamber, a valve casing mounted at one side or said wind chamber, a power pneumatic located below said wind chamber, and means for supporting said power pneumatic detachably in position. I

34. The combination of a wind chamber, a valve casing detachably mounted at one side thereof, a power pneumatic below the valve casing and a support for'the pneumatic detachably connected with the pneumatic and wind chamber.

35. The combination of a wind chamber, valve casings on opposite sides of the wind chamber, means for holding the valve casings in position. said means extending be- 105. tween the valve casings above and below the wind chamber and a pneumatic supported'below the wind chamber and valve casings. i

36. The combination of a wind chamber, valve casings on opposite sides of said wind chamber, means for detachably'securing the valve casings in position, said means extending above and below the wind chamber, a pneumatic below the wind chamber, and means for detachably supporting said pneumatic. a

37. The combination of a wind chamber,

a valve casing located at one side of said wind chamber, said valve casing being of '120 substantially the same height as the wind chamberand having its top and bottom sub stantially level with the top and bottom of the wind chamber, and means for holding said valve casing in position, said means being located above the wind trunk and valve casing. I

- 38. The combination of a wind chamber,

a valve casing located at one side of' said wind chamber, said valve casing being or substantially the same height as the wind chamber and having its top and bottom substantially level with the top and bottom of the wind chamber, and means for holding saidvalve casing in positiom'said means being located above the wind chamber and valve casing. and also below the same.

' The combination of a wind chamber and a valve casing located at one side of the wind trunk, the top of the valve casing being substantially level with the top of thewi-ud trunk, and means for holding said valvecasing in position, said means being positioned above the wind chamber and valve casing. I

&0. The combination with a wind chamber, of a valve casing mounted at one side of the wind chamber, said valve'ca'sing having its top substantially level with the top of the wind chamber and means for securing said valve casin in position, said means being located above the wind chamber and valve casing and comprising members projecting upwardly from the same and securing devices engaging said members.

ll. The combination of a wind trunk and a valve casing detachably secured in position at one side of the wind trui'ilnsaicl valve casing being provided with a valve seat removable from the valve casing independent of the connection of the casing and wind trunk.

The combination of a wind chamber and a valve casing detaehably located at oie side of the win l having a detachable top and a detachable bottom.

43. The combination of a wind chamber,

and a valve casing at one side of the wind chamber, said valve casing comprising a single body part having a transverse apertured partition located between. the top and bottom of said body part and also having side apertures above and below said partition. said sing i body part bcing provided with a removable top adapted to form a valve seat and a removable bottom adapted to form a diaphragm support. r

H. A valve casing comprising a single body part provided with an integrally tormcd transverse aperture-d partition located between the top and bottom of said body part, said bodwpart being provided with a bodily removable lop having an aperture. and constructed to form a valve seat and being also provided with a bodily removable bottom member constructed to form a diaphragm support.

45. A valve (using comprising); a single body part provided with a integrally formed transverse apertured partition located between the top and bottom of said bedv oart,

chamber, said valve casing member constructed to form a diaphragm,

support. said body part being constructed with side apertures, one located above and the other below 'lltl trans JOlSQ partition.

e6. The combination with a. wind chamber, of a power pneumatic located below the wind chamber, and means outside of the wind cha iber for supporting said pneumatic, said means engaging and being supported by the top of the wind chamber and extending downwardly therefrom to the pneumatic.

4:7. The combination-with wind chamber, of a pneumatic located below the wind chamber, and means for supporting pneumatic, said means engaging and extending crosswise of the wind chamber and thence downwardly to the pneumatic.

l8. The combination of a wind chamber, a pneumatic below the wind chamber and a support for the pneumatic resting upon the top of the wind chamber and extending down at one side thereof to l9. The'combination of a wind chamb r, a pneumatic below the wind chamber a: support for the pneumatic eng'a in wind chamber and extending side thereof to the pneumatic, detach-ably secured dctachably connected to the .i one 1 support and pneu- 50. The combination of a wind chamber, a pneumatic below the wind chamber, a sup port for the pneumatic having a surface substantially in contact with one of the walls of the wind chamber, and screws for detachably securing said support to said wall.

51. The combination of a wind chamber, pneumatic below the wind chamber, a sup )ort for the pneumatic having a surface *ubstantially in contact with one of the walls I" the wind iamber, and means for detachb 'ecuring said upport to said wall.

scribing Witnesses.

- Gn- BENSGE;

the pneumatic.-

The combination with the Wind chaa said 

